Capture-gated Spectroscopic Measurements of Monoenergetic Neutrons with a Composite Scintillation Detector

Jason Nattress, M. Mayer, A. Foster, Amira Barhoumi Ep Meddeb, C. Trivelpiece, Zoubeida Ounaies, I. Jovanovic

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We report on the measurements of monoenergetic neutrons from DD and DT fusion reactions by use of the capture gating method in a heterogeneous plastic-glass composite scintillation detector. The cylindrical detector is 5.08 cm in diameter and 5.05 cm in height and was fabricated using 1-mm diameter Li-doped glass rods (GS20) and scintillating polyvinyl toluene (EJ-290). Different scintillation decay constants are used to identify energy depositions in two materials constituting the composite scintillator. Geant4 simulations of the neutron thermalization and capture process were conducted, finding a mean capture time of approximately 2.6 μs for both DD and DT neutrons. A capture gating time acceptance window based on simulation results was used to identify the neutron thermalization pulses. The total scintillation light yield produced in neutron thermalization was measured and found to show consistency on event-by-event basis despite the variety of neutron thermalization histories prior to capture. The ratio of light yields from thermalization of 14.1 MeV and 2.45 MeV neutrons in the EJ-290 scintillator was determined to be 14.6, and the light output from 2.45 MeV neutrons was also correlated to its electron equivalent, obtaining a value of 0.58 ± 0.05 MeVee.

Original languageEnglish (US)
Article number7454847
Pages (from-to)1227-1235
Number of pages9
JournalIEEE Transactions on Nuclear Science
Volume63
Issue number2
DOIs
StatePublished - Apr 1 2016

Fingerprint

neutron thermalization
Scintillation counters
scintillation
Neutrons
neutrons
composite materials
detectors
Composite materials
scintillation counters
glass
Scintillation
acceptability
Phosphors
toluene
rods
plastics
simulation
fusion
histories
Glass

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

Cite this

@article{5b0543c7dea74a7abf44fe2aac28cbed,
title = "Capture-gated Spectroscopic Measurements of Monoenergetic Neutrons with a Composite Scintillation Detector",
abstract = "We report on the measurements of monoenergetic neutrons from DD and DT fusion reactions by use of the capture gating method in a heterogeneous plastic-glass composite scintillation detector. The cylindrical detector is 5.08 cm in diameter and 5.05 cm in height and was fabricated using 1-mm diameter Li-doped glass rods (GS20) and scintillating polyvinyl toluene (EJ-290). Different scintillation decay constants are used to identify energy depositions in two materials constituting the composite scintillator. Geant4 simulations of the neutron thermalization and capture process were conducted, finding a mean capture time of approximately 2.6 μs for both DD and DT neutrons. A capture gating time acceptance window based on simulation results was used to identify the neutron thermalization pulses. The total scintillation light yield produced in neutron thermalization was measured and found to show consistency on event-by-event basis despite the variety of neutron thermalization histories prior to capture. The ratio of light yields from thermalization of 14.1 MeV and 2.45 MeV neutrons in the EJ-290 scintillator was determined to be 14.6, and the light output from 2.45 MeV neutrons was also correlated to its electron equivalent, obtaining a value of 0.58 ± 0.05 MeVee.",
author = "Jason Nattress and M. Mayer and A. Foster and {Barhoumi Ep Meddeb}, Amira and C. Trivelpiece and Zoubeida Ounaies and I. Jovanovic",
year = "2016",
month = "4",
day = "1",
doi = "10.1109/TNS.2016.2537761",
language = "English (US)",
volume = "63",
pages = "1227--1235",
journal = "IEEE Transactions on Nuclear Science",
issn = "0018-9499",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "2",

}

Capture-gated Spectroscopic Measurements of Monoenergetic Neutrons with a Composite Scintillation Detector. / Nattress, Jason; Mayer, M.; Foster, A.; Barhoumi Ep Meddeb, Amira; Trivelpiece, C.; Ounaies, Zoubeida; Jovanovic, I.

In: IEEE Transactions on Nuclear Science, Vol. 63, No. 2, 7454847, 01.04.2016, p. 1227-1235.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Capture-gated Spectroscopic Measurements of Monoenergetic Neutrons with a Composite Scintillation Detector

AU - Nattress, Jason

AU - Mayer, M.

AU - Foster, A.

AU - Barhoumi Ep Meddeb, Amira

AU - Trivelpiece, C.

AU - Ounaies, Zoubeida

AU - Jovanovic, I.

PY - 2016/4/1

Y1 - 2016/4/1

N2 - We report on the measurements of monoenergetic neutrons from DD and DT fusion reactions by use of the capture gating method in a heterogeneous plastic-glass composite scintillation detector. The cylindrical detector is 5.08 cm in diameter and 5.05 cm in height and was fabricated using 1-mm diameter Li-doped glass rods (GS20) and scintillating polyvinyl toluene (EJ-290). Different scintillation decay constants are used to identify energy depositions in two materials constituting the composite scintillator. Geant4 simulations of the neutron thermalization and capture process were conducted, finding a mean capture time of approximately 2.6 μs for both DD and DT neutrons. A capture gating time acceptance window based on simulation results was used to identify the neutron thermalization pulses. The total scintillation light yield produced in neutron thermalization was measured and found to show consistency on event-by-event basis despite the variety of neutron thermalization histories prior to capture. The ratio of light yields from thermalization of 14.1 MeV and 2.45 MeV neutrons in the EJ-290 scintillator was determined to be 14.6, and the light output from 2.45 MeV neutrons was also correlated to its electron equivalent, obtaining a value of 0.58 ± 0.05 MeVee.

AB - We report on the measurements of monoenergetic neutrons from DD and DT fusion reactions by use of the capture gating method in a heterogeneous plastic-glass composite scintillation detector. The cylindrical detector is 5.08 cm in diameter and 5.05 cm in height and was fabricated using 1-mm diameter Li-doped glass rods (GS20) and scintillating polyvinyl toluene (EJ-290). Different scintillation decay constants are used to identify energy depositions in two materials constituting the composite scintillator. Geant4 simulations of the neutron thermalization and capture process were conducted, finding a mean capture time of approximately 2.6 μs for both DD and DT neutrons. A capture gating time acceptance window based on simulation results was used to identify the neutron thermalization pulses. The total scintillation light yield produced in neutron thermalization was measured and found to show consistency on event-by-event basis despite the variety of neutron thermalization histories prior to capture. The ratio of light yields from thermalization of 14.1 MeV and 2.45 MeV neutrons in the EJ-290 scintillator was determined to be 14.6, and the light output from 2.45 MeV neutrons was also correlated to its electron equivalent, obtaining a value of 0.58 ± 0.05 MeVee.

UR - http://www.scopus.com/inward/record.url?scp=84964478102&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84964478102&partnerID=8YFLogxK

U2 - 10.1109/TNS.2016.2537761

DO - 10.1109/TNS.2016.2537761

M3 - Article

AN - SCOPUS:84964478102

VL - 63

SP - 1227

EP - 1235

JO - IEEE Transactions on Nuclear Science

JF - IEEE Transactions on Nuclear Science

SN - 0018-9499

IS - 2

M1 - 7454847

ER -